ST_Synchron - General Information

Overview

Type:	Data structure
Available as of:	V1.1.4.0
Inherits from:	-
Versions:	Current version

Description

This structure is used to configure a station that operates in synchronous mode.

Structure Elements

Variable	Data type	Description
ifMaster	SystemConfigurationItf.IF_Master	Interface of the master for this station. The following types of masters are supported: Physical and virtual axes, SINCOS and incremental encoder.
lrMasterPeriod	LREAL	Period in which the master moves.
lrSynchronStart	LREAL	Path for acceleration to master velocity.
lrSynchronEnd	LREAL	Path for deceleration from master velocity to stop.
lencHelp	SystemConfiguration.L_ENC	Logical auxiliary encoder. (Must be used)
lrStartDelayDistance	LREAL	Distance between the Touchprobe sensor and the transfer point to the train.
etLawOfMotion	ET_LawOfMotion	Law of motion by means of which the train moves. The available laws are: ModAccTr: modified acceleration trapezoid InclSin: inclined sine line SystemCam: system or user-defined profile.
diUserCamId	DINT	ProfileId of a user-defined Cam profile. Only effective if etLawOfMotion = SystemCam.
lrMinProductLength	LREAL	Minimum length in units of the master where the Touchprobe sensor must be covered so that a product is detected as valid.
lrLockOutDistance	LREAL	After a product is detected as valid, the Touchprobe sensor is switched off for the lrLockOutDistance.
etEventTrigger	ET_EventTrigger	Enumeration which defines how the start signals for the synchronous station are generated. The following options are possible: StartOnSignal: Start signals come from the Touchprobe sensor or from the bit xStart. SyncToPhase: Start signals are automatically generated to the specified phase lrPhase of the respective cycle. MasterSelectPos: Start signals are generated if the Touchprobe sensor on lrMasterSelectPos is covered. The start takes place on lrPhase.
lrPhase	LREAL	Phase in the master period on which the product arrives in the mode etEventTrigger = MasterSelectPos. In the mode etEventTrigger = SyncToPhase, it is the phase where the product is to be stored on the master belt.
lrMasterSelectPos	LREAL	The point in the master period where the Touchprobe input is queried. If a product is available at this point then a step is executed; if no products are available, then no step is executed.
stDepartureMove	ST_Movement	Motion parameter or the departure from this station to the next. See ST_Movement. The parameters are adopted when the next train departs.
uiSyncStepsPreStation	UINT	The steps which the train travels synchronously before it enters into the station and starts loading / unloading.
lrGearFactor	LREAL	Indicates the gear factor between encoder and trains. If a value greater than 1 is selected, the trains move faster than the encoder by the factor lrGearFactor.
lrEndOfSyncPhaseOffset	LREAL	Indicates an offset before the end of the synchronous phase of a step from where synchrony should be terminated and a compensating cam should be started.
xSafeArrival	BOOL	FALSE: Default value TRUE: Reduces internal collision prevention threshold. Refer to the hazard message below.
xOverwriteMasterVelocity	BOOL	FALSE: Default value TRUE: User-defined velocity (ST_Synchron.lrUserDefinedMasterVelocity) is used for synchronous master. Refer to the hazard message below.
lrUserDefinedMasterVelocity	LREAL	Velocity for synchronous master of this station. This value is only adopted if ST_Synchron.xOverwriteMasterVelocity = TRUE. Refer to the hazard message below.

WARNING
	UNINTENDED EQUIPMENT OPERATION Define motion parameters to avoid collisions if xSafeArrival is set to TRUE. Define the velocity for synchronous master of this station to avoid collisions when using lrUserDefinedMasterVelocity or when setting xOverwriteMasterVelocity to TRUE. Failure to follow these instructions can result in death, serious injury, or equipment damage.